ΔE 9.2, close: similar, with a visible difference side by side. Red RLM23 is a little darker, more saturated than Blushing Flesh.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Red RLM23 is a little darker, more saturated than Blushing Flesh.
The same difference applies the other way round: Blushing Flesh is a little lighter, more muted.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Blushing Flesh on the colour wheel See Red RLM23 on the colour wheel
All matches: Blushing Flesh equivalents · Red RLM23 equivalents